Question : Directions: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
QST _ QS _ RQ _ TR _STR
Option 1: SQTR
Option 2: RTSQ
Option 3: TRQS
Option 4: TSRQ
Correct Answer: RTSQ
Solution :
Given:
QST _ QS _ RQ _ TR _STR
To fill the series we have to divide the series – QST _ / QS _ R / Q _ TR / _STR
Let's check each option –
First option:
SQTR; QST
S
/ QS
Q
R / Q
T
TR /
R
STR (No repeated pattern has been found)
Second option:
RTSQ; QST
R
/ QS
T
R / Q
S
TR /
Q
STR (QSTR is repeated in the series)
Third option:
TRQS; QST
T
/ QS
R
R / Q
Q
TR /
S
STR (No repeated pattern has been found)
Fourth option:
TSRQ; QST
T
/ QS
S
R / Q
R
TR /
Q
STR (No repeated pattern has been found)
So, the series becomes→QSTRQSTRQSTRQSTR. Hence, the second option is correct.
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